    <div class="col-md-12">
        <div class="row">
            <div class="col-md-3">
                <div class="cat1 c-cat" ng-click="vm.showCourse('cat1')">
                    <h5 class="short-intro">高人带你涨姿势</h5>
                    <h3>行政</h3>
                    <h5>是不是必要看看就知道</h5>
                </div>
            </div>
            <div class="col-md-3">
                <div class=" c-cat cat2" ng-click="vm.showCourse('cat2')">
                    <h5 class="short-intro">快读提升逼格</h5>
                    <h3>技术</h3>
                    <h5>iOS/HTML5/PS/AI</h5>
                </div>
            </div>
            <div class="col-md-3 ">
                <div class="c-cat cat3" ng-click="vm.showCourse('cat3')">
                    <h5 class="short-intro">手把手教你学财务</h5>
                    <h3>财务</h3>
                    <h5>帮你解答为什么这么做</h5>
                </div>
            </div>
            <div class="col-md-3">
                <div class="c-cat cat4" ng-click="vm.showCourse('cat4')">
                    <h5 class="short-intro">快速了解行情</h5>
                    <h3>市场</h3>
                    <h5>学着点，你懂的</h5>
                </div>
            </div>
        </div>
